Vegetables Fight Diabetes and Colon Cancer

Discussion in 'Food and nutrition' started by Doe, Nov 27, 2003.

  1. Doe

    Doe Guest

    Vegetables Fight Diabetes and Colon Cancer

    Two studies in the December, 2003, American Journal of Clinical Nutrition add more evidence against
    fatty meats, dairy products, and eggs, while supporting the health value of vegetable-rich diets. In
    the first report, Michigan State University researchers analyzed data from the third National Health
    and Nutrition Examination Survey, conducted by the Centers for Disease Control and Prevention. They
    identified two prevalent dietary patterns: One, which they termed the “Western” pattern, was
    heavy on processed meats, eggs, red meats, and high-fat dairy products, while the other, called the
    “American-healthy” pattern, emphasized green, leafy vegetables, salad dressings, tomatoes, other
    vegetables (e.g., peppers, green beans, corn, and peas), cruciferous vegetables, and tea. Blood
    tests showed that the more people followed the “Western” pattern, the more problems they had
    with blood-sugar control. They had higher blood concentrations of glycosylated hemoglobin, insulin,
    and C-pep tide, and lower concentrations of folic acid.

    In the second report, the antioxidant lycopene showed power to prevent colon cancer. Lycopene is the
    red pigment in tomatoes, watermelon, pink grapefruit, pink guava, and papaya. Researchers in
    Stuttgart, Germany, studied people undergoing colonoscopy, and compared those whose colon
    examinations turned out to be normal to those whose examinations revealed adenomatous polyps—the
    kind that often lead to colon cancer. Those with the precancerous growths had, on average, 35% lower
    blood levels of lycopene, as well as somewhat lower blood levels of beta-carotene. The results
    suggest that loading up on healthy fruits and vegetables, especially lycopene-rich varieties, can
    help prevent colon cancer. Previous studies have linked lycopene to reduced risk of cancers of the
    prostate, lung, and stomach.

    The studies are not yet on Medline. Here are the references:

    Kerver JM, Yang EJ, Bianchi L, Song WO. Dietary patterns associated with risk factors for
    cardiovascular disease in healthy U.S. adults. Am J Clin Nutr 2003;78:1103-10.

    Erhardt JG, Meisner C, Bode JC, Bode C. Lycopene, â-carotene, and colorectal adenomas. Am J Clin
    Nutr 2003;78:1219-24.

    For information about nutrition and health, please visit www.pcrm.org.

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